Sperry Evaluation

Sperry Evaluation

1. Strengths

   • Quantative
   • Scientific Equipment for measuring:
     • High control
     • accurate- reliable and valid
   • Quasi
     • no manipulation of IV
     • can study real problems which increase the ecological validity
   • Laboratory
     • high control so its reliable
   • Case study
     • rich in-depth data
     • used to investigate instances of behaviour that are rare
   • ethics
     • all had callosum split before
     • no deception
     • Confidentiality
   • ecological valid

2. Data

   • Quantative
     • results of each test
   • Qualitive
     • how a patient responds to a symbol displayed to RVF

3. Sample

   • 11 participans
     • small
       • more in-depth data
     • might be quite representative as not many people may have had their callosum split
   • American
   • control group
   • don't know extent of the differences between them due to seizes
   • opportunity

4. Weaknesses

   • Labotary
     • demand characteristics
     • artificial situation
   • quasi
     • participants aware they are being studied
   • ecological validity
     • would have more than 1/10 of a second in real life

5. Improvments

   • sample
     • more paticipants
       • other country
         • generilisable

6. Usefulness

   • help understand the lives of people with their hemispheres split
   • hemispheres have different functions